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(No Model.) 2 Sheets-Sheet 1. J. P. SH'AWHAN.

COMBINED MOTOR AND ELECTRIC GENERATOR. No, 401.761. Patented Apr. 23, 1889.

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(No Model.) v 2 Sheets-Sheet 2. J. F. SHAWHAN.

COMBINED MOTOR AND ELECTRIC GENERATOR. No. 401,761. Patented Apr. 23, 1889.

III/M WU U644 cows N. PETERS. Fhulo-Lmwgmphur. Washingmn. D. C.

UNITED STATES PATENT OFFICE.

JABEA F. SHAXVIIAN, OF DAYTON, Ol'lIO, ASSIGNOR OF ONE-HALF TO JAMES \V. CARPENTER, OF SAME PLACE.

COMBINED MOTOR AND ELECTRIC GENERATOR.

SPECIFICATION forming part of Letters Patent No. 401,761, dated April 23, 1889.

Application filed March 23,1888. Serial No. 268,268. (No model.)

To all whom it may concern: the current to be generated, andl have shown 50 Be it known that l, JABEA F. SHAWHAN, a one well-known form of cylinder-winding in citizen of the United States, residing at Day which the terminals of the coils 12 are each ton, in the county of Montgomery and State connected to a plate, 13, in the commutator.

of Ohio, have invented certain new and use- This commutator is made up of a series of ful Improvements in Electric Generators and plates, 13, mounted upon the armature-shaft 5 5 Means for Operating Them, of which the fol- 5, being insulated therefrom by insulatinglowing is a specification. rings 14, the internal faces of the commuta- My invention relates to dynamo or mag tor-plates being suitably shaped, as shown,to

1o neto electric generators and means for oper be clamped by said rings and to be held seating them; and it has for its object to procurely in position by the nuts 15 16, work duce an improved electric generator which ing in screw-threads 17 011 the shaft. One of shall be simple of construction and compact these nuts, 16, is formed with a small cavity, in form, and be capable of being driven by 18, to receive and hold the oil which may 15 an engine connected directly thereto, which work out of the bearing of the shaft and preis also simple and compact, the object being vent the same from coming in contact with primarily to produce a generator andamotor the plates of the commutator. This armafor driving the same which shall be adapted, ture-shaft 5 is supported in a bearing, 19, among other things, for use on locomotives for formed in a cross-bar or plate, 20,which is se 20 head-light purposes and the like; and to these cured in the projection or hood 21, formed as ends my invention consists in the construca part of or attached to the main frame Land tions and arrangements of parts, substantially the other end is shown as fitting into a recess as pointed out more particularly hereinafter. in the bearing of the disk of the engine; but

Referring to the accompanying drawings, it will be understood, of course, that the ar- 2 5 Figure '1. is a transverse sectional view of my rangement of this end of the shaft will deimproved generator and one form of engine pend upon the nature. of the driving-engine. 7 attached thereto for operating it. Fig. 2 is Mounted in the end of the hood 21. is a an end view, partially in section, taken on plate, 22, preferably of insulating material, the line 03 :r, Fig. 1. Fig. I) is an end view which serves as a support for the case 23 of 30 showing the arrangement of commutatorthe brush-holders. The brushes maybe made brushes. Fig. at is a detail, and Fig. 5 is a of any material, as anumbcrof plates of cop- 8o modification thereof. per, or of a single plate of copper joined to In the drawings, 1 is the supporting-fra1ne or formed into an extension, 24, which fits of the generator, which also forms the neutral into the casing 23, and these brushes are ar- 3 5 portions of the field-magnets 2, which have ranged parallel with the axis of the commuprojecting polar extensions 3 and are surtator and bear upon the faces 25 of the comrounded by the field magnet coils i. Between mutator-sections, which are arranged radially the polar extensions is placed an armature of around the shaft of the armature, as shown. any suitable construction,and I have shown v 43y thus arranging the working-faces of the 40 one mounted on the armature-shaft 5, concommutator-plates at right angles to the shaft sisting of the rings 6, of magnetic material, I am enabled to make a very compact and separated from each other by insulating masimple construction. terial and bound securely together by the end. Secured to the face-plate 22 are springs 29, pieces or disks, 7 8, one of which abuts against with their free ends bearing upon the exten- 45 a collar, 9, on the shaft 5, and the other is ad sion 24; of the brushes, and screws 26 are projustably held in position by the screw-nut l0, vided in the free ends of the springs, whereworking upon the screw-threaded portion 11 by the pressure of the brushes upon the comof the shaft 5. This armattire-cylinder is mutator maybe adjusted. By this means the wound in any desired manner, according to pressure on the brushes maybe regulated, so

that a proper hearing may be had and the wear upon their endsin contact with the commutator may be compensated for. Inorder to remove the brushes for the purpose of replacing others it is only necessary to loosen one of the nuts 27, when the spring 29 can be swung out of position and the brush removed, andit will be seen thatI make use of one of the nuts or bolts 27 to hold the spring that is used in confining the brush-case 23 in position.

In Fig. 5 I have shown a modified arrangement for holding the brushes against the commutator, in which the brushes are held, as before, in an extension, 24, in a cylinder or casing, 23, having a closed end, and above this is placed a reservoir, 51, containing some fluid, as oil, and a small passage, 52, is formed between said reservoir and the casing, so that the fluid may flow therein.

It will be seen that as the end of the brush wears away the weight of the fluid in the reservoir will cause it to flow into the casing behind the lnush-extension, and thereby maintain the pressure on the brush uniform until it is practically used up.

In using the generator in exposed positions-as, for instance, for locomotive headlight purposesit is desirable, and indeed necessary, to protect the operating parts from extraneous substances, and in order to do this I apply a casing, 30, between the frame and the magnets at each end of the armature, and I also connect the polar extensions 3 by a plate, 31, of non-magnetic material, and as the hood 21, which is formed with or attached to the frame of the machine, is inclosed by the insulating-plate 22, itwill be seen that all the operative parts of the generator are protected, while the field-m agnet coils 4 are exposed, and this exposure operates to maintain the fields cool and prevent any undue heating.

It will be seen that by this construction and arrangement I am enabled to produce a very simple and compact generator having all the operating parts protected, so that it is well adapted for use in exposed positions.

\Vhile the armature may be driven by any desired power, I have shown an engine supported in an extension of the case, which is bolted directly to the frame 1, and this engine I have found to be a very simple and effective one, operating at high rates of speed, and not liable to get out of order; but as it forms no part of my invention, being covered in a separate application for patent, it is only necessary to state that it consists, generally, of a number of cylinders, 40, each provided with a piston, 41, connected by a link, 42, to a disk, 43, which is supported in bearings .44 in the frame 1, and which furnishes a support for one end of the armature-shaft 5, and is positively connected therewith by any suitable means, as a pin, 45. It will thus be seen that the single bearing furnishes a support for a portion of the engine, as well as for one end of the armature-shaft.

By the above arrangement I produce a combined generator and motor therefor which is exceedingly simple and compact, and all the operative parts of both the engine ormotor and the generator are protected from eXposure to the elements, while the field-magnets, which are not liable to be damaged by exposure, are unprotected.

It will be evident that while I have thus specifically described the construction and operation of my generator, and enough to indicate the character of the motor, I am not limited to the precise construction set forth, nor to the arrangements of parts shown, as portions of my invention may be used separately or together with other equivalent arrangements of devices without departing from the principles thereof.

I claim 1. In an electric generator, a frame supporting the field-magnets and provided with a contracted hood extending from one end thereof, and an armature-shaft, one end of which is supported in the frame and the other in the hood, a commutator arranged within the hood, and commutator-brushes supported by said hood, substantially as described.

2. In an electric generator,-a supportingframe carrying the field-magnets and provided with a hood extending from one end thereof, a cross-bar ar 'anged in said hood, and an armature-shaft, one end of which is supported in said cross-bar and the other is supported in the frame, substantially as described.

3. In an electric generator, a frame supporting the field-magnets and having a hood extending from one end thereof inclosing the commutator and brushes, and a casing surrounding the exposed portions of I the armature between the field-magnets and the frame, substantially as describe at. In an electric generator, a frame supporting the field-magnets and having a hood projecting from one side thereof, a disk of insulating material closing the end of said hood, and casings extending between the field-magnets and the frame, whereby the armature and commutator and brushes are completely protected from exposure, substantially as described.

5. In an electric generator, an armature- -shaft, a commutator supported thereon, and

screw-nuts for holding said commutator in position, one of the nuts being provided with a recess for the reception of oil, substantially as set forth.

6. In an. electric generator, a frame supporting the field-magnets, a hood projecting from said frame, and having a cross-bar supporting the armature shaft, a commutator upon said armature-shaf t, a disk of insulating material closing said hood, and commutatorbrushes supported in said disk and arranged parallel to said shaft to make contact with the commutator-sections at right angles to the shaft, substantially as described.

7. In an electric generator, a frame supporting the field'n1agnets, a hood extemling therefrom, a disk of insulating material secured in said hood, sleeves secured to said insulating material, and commutator-brushes in said sleeves and arranged parallel with the armature-shaft, substantially as described.

8. In a combined electric generator and motor therefor, a frame supporting the fieldmagnets, provided with a hood inclosing the commutator and brushes therefor, a casing between the field-magnets and frame inclosing the exposed portions of the armature, and a casing secured to the other end of the frame inclosing the motor connected to the armature-shaft, whereby all the operative parts of the generator and motor are protected from exposure, substantially as described.

9. In an electric generator, a frame supporting the field-magnets, casings arranged between the field-magnets and frame, and a hood inclosing the commutator and brushes, whereby the operative parts of the generator are protected from exposure while the field magnets are exposed to the air, substantially as described.

10. In an electric generator, the combination, with an armature-shaft carrying a commutator, of a disk of insulating material, casings attached to said disk, eonnnutatorbrushes sliding in said casings, springs secured to the disk and bearing upon the end of said brushes, and adjusting-screws in the ends of the springs, substantially as d eseribed.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

JABEA F. Sl'lrUVIlAN.

Witnesses:

WEBs'rER W. SHUEY, '1. BEN. (,h-Yl-KPEN'JTER. 

